Subtract 8/90 from 6/12
6/12 - 8/90 is 37/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
6/12 = 6 × 15/12 × 15 = 90/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
8/90 = 8 × 2/90 × 2 = 16/180 - Subtract the two like fractions:
90/180 - 16/180 = 90 - 16/180 = 74/180 - After reducing the fraction, the answer is 37/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/12-16/90 6/24-8/90 18/12-8/90 6/12-24/90 6/36-8/90 30/12-8/90 6/12-40/90 6/60-8/90 42/12-8/90 6/12-56/90 6/84-8/90